Add OS.get_time_zone_info function

The returned dictionary maps "name" to the
name of the current time zone, and "bias" to
a bias from UTC in minutes.

2 files changed, 29 insertions, 1 deletions

diff --git a/drivers/unix/os_unix.cpp b/drivers/unix/os_unix.cpp
index afb85e49e8..8ba56490d7 100644
--- a/drivers/unix/os_unix.cpp
+++ b/drivers/unix/os_unix.cpp
@@ -246,9 +246,36 @@ OS::Time OS_Unix::get_time(bool utc) const {
 	ret.hour=lt->tm_hour;
 	ret.min=lt->tm_min;
 	ret.sec=lt->tm_sec;
+	get_time_zone_info();
 	return ret;
 }
-	
+
+OS::TimeZoneInfo OS_Unix::get_time_zone_info() const {
+	time_t t = time(NULL);
+	struct tm *lt = localtime(&t);
+	char name[16];
+	strftime(name, 16, "%Z", lt);
+	name[15] = 0;
+	TimeZoneInfo ret;
+	ret.name = name;
+
+	char bias_buf[16];
+	strftime(bias_buf, 16, "%z", lt);
+	int bias;
+	bias_buf[15] = 0;
+	sscanf(bias_buf, "%d", &bias);
+
+	// convert from ISO 8601 (1 minute=1, 1 hour=100) to minutes
+	int hour = (int)bias / 100;
+	int minutes = bias % 100;
+	if (bias < 0)
+		ret.bias = hour * 60 - minutes;
+	else
+		ret.bias = hour * 60 + minutes;
+
+	return ret;
+}
+
 void OS_Unix::delay_usec(uint32_t p_usec) const {
 
 	usleep(p_usec);
diff --git a/drivers/unix/os_unix.h b/drivers/unix/os_unix.h
index bafa590d5f..8bb57eda12 100644
--- a/drivers/unix/os_unix.h
+++ b/drivers/unix/os_unix.h
@@ -90,6 +90,7 @@ public:
 		
 	virtual Date get_date(bool utc) const;
 	virtual Time get_time(bool utc) const;
+	virtual TimeZoneInfo get_time_zone_info() const;
 
 	virtual uint64_t get_unix_time() const;